-- "McKinley's perch as the tallest mountain in North America just got a little less comfortable," says the Anchorage Daily News.

McKinley is also known as Denali. According to Treadwell's office:

"Denali's elevation was originally measured to stand 20,320 feet in 1952, based on photogrammetry. A 1989 field survey recorded an elevation of 20,306 feet — 14 feet shorter than the 1952 recording.

"The 2012 revision of 20,327 feet was recorded with radar technology deployed as a result of Alaska's Statewide Digital Mapping Initiative (SDMI), which also revealed that an entire ridgeline of Mt. Dickey in Denali National Park was missing from previous maps — one of many discrepancies corrected by recent map updates.

"The State of Alaska invested $9.59 million in SDMI since 2010, and the federal government has invested $14 million toward the overall cost of creating a digital elevation model for Alaska. The initiative, nearly 50% complete, is on schedule for statewide completion by 2016."